Albert claude bowerman



(No Model.)

A. C. BOWBRM'ANj SEWER TRAP.

No. 427,546. Patented May' 13, 1890.

yll.,

UNITED STATES ALBERT CLAUDE BOVERMAN, OF BLOOMFIELD, ONTARIO, CANADA.

S EW E R T RA P SPECIFICATION forming part of Letters Patent No. 427,546, dated May 13, 1890i.

Application filed September 9, 1889. Serial No1 323,441. (No model.)

T0 all whom t may concern.`

Be it known that| I, ALBERT CLAUDE BOWER- MAN, of Bloomfield, in the Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improvements in Sewer-Traps; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part hereof.

My invention, which will be hereinafter fully set forth and claimed, relates to devices .for preventing the escape of sewergases through waste-pipes.

The object of my invention is a trap which can be emptied at will to prevent its contents freezing, and that can be cleaned while the gas-seal is being maintained.

Figure lisa front elevation of my improved trap. Fig. 2 is a rear elevation of the same. Fig. 3 is a section of the saine on line @c oc, Fig. 5. Fig. 4 is a similar section showing` the plug in a different position. Fig. 5 is a transverse section of the saine on line y y, Figs. l, 2, and 3.

A is a short cylinder with conical or taper ing bore, closed at the small end and open at the large end, and provided at its circumference with an inlet-nozzle A near the top and at one side and with an outlet-nozzle A at the bottom. The outlet-opening is extended circumferentially on the side opposite the inlet by a covered s1ot-like opening a.

B is a tapering plug fitted in the cylinder A and adapted to turn therein snugly, being provided with a flange b to bear against the rim of the cylinder A, and being held in it by a set-screw b at the back. Said plug is provided with two internal passages b b and 54195, the upper ZJ b being an obliquely transverse one, the mouth h of which is in the circumference or edge opposite the inlet A when the plug is in its normal position, Figs. l, 2, 3, and 5, and terminates in an outlet b on the face. The other b4 if passes from Van orifice b* in the face of the plug to an outlet b5 in the edge opposite the outlet A in the cylinder. Formed integrally with said plug, or secured to it by suitable means, is a loop-pipe or communicating tube C, taking its beginning at the outlet b on the face of the plug or the passage D b andv forming a continuation thereof, and terminating on the orice b4 in the face of the plug of the passage bl b5, of which it also forms a continua tion. The loop C consists of two parallel tubular legs, forming the How and return sides or leg adjoining the passage h h, where it is turned sidewardly with a bend c in the direction of the said passage. A screw-plug C is provided at the lower end of said loop, which when removed allows of the proper cleansing of the same.

It will be seen that when the loop is in the position shown in' Fig. l water or other liqnids may enter by the inlet A', pass through the orifice in the circumference of the cylinder A into the passage b" b of the plug B, out of said plug by the orifice b into the loop C, which it will keep filled to the orifice b4 in the plug on the line L, and flow through the passage IfL b5 in said plug through the outlet A. The gasseal is thus made by the liquid in the legs of the loop. By turning the loop, and with it the plug B, into the position shown in Fig. 4, the continuity of the free passage will be broken between the inlet A and the passages of the plug, and the loop will empty itself through the passage b" b, which is in part open to the outlet A, while part of the passage U1 b5 is partly opposite the slot a. Thus when frost is impending the loop may be turned and emptied to prevent it from freezing without a passage for sewergas being provided.

In a sewer-trap, the combination of a short conical cylinder A, having inlet A and outlet A a, a conical plug B, fitting said cylinder to turn therein snugly and having the passages b 12 and b4 b5, forming in its normal position continuations of the inlet and outlet, respectively, a loop C, forming a continuation with said passages in the plug and provided with a screw-cap C', and a set-screw b', holding said plug centrally to the cylinder, substantially as set forth.

In testimony whereof I have signed in the presence of the undersigned witnesses.

ALBERT CLAUDE BOWERMAN.

NVitiiesses:

G. V. CHErsTY,

E. MERRILL. 

